Check for spatialite geometry

[damienmulder]

Description

Valid geometry checks (RQ5 and RQ23) now check if geometry is in the GeoPackage format using the IsValidGPB() function.
Non-empty geometry which is not in the GeoPackage format is now considered invalid.

Type of change

• Improvement of existing feature

Checklist:

• I've double-checked the code in this PR myself
• I've left the code better than before (boy scout rule)
• The code is readable, comments are added that explain hard or non-obvious parts.
• I've expanded/improved the (unit) tests, when applicable
• I've run (unit) tests that prove my solution works
• There's no sensitive information like credentials in my PR

[rahmabPublic]

De uitkomst van ST_IsValide(.....) is een integer en geen boolean.

ogrinfo -sql "select ST_IsValid(geom) from MajorRailwaySource where id=574 " nieuwe_data/DF1_5_major_railway_source.gpkg
ST_IsValid(geom) (Integer) = 1

[damienmulder]

Ja, mee eens. De integer uit St_IsValid() wordt in de CASE expressie gematched aan de WHEN 0 of ELSE, zie bijv.:

ogrinfo reststromen.gpkg -sql "SELECT CASE ST_IsValid(geom) WHEN 0 THEN 'Not valid' ELSE 'Valid' END AS message FROM reststromen WHERE fid=1"